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1234705-19-1

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1234705-19-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1234705-19-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,4,7,0 and 5 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1234705-19:
(9*1)+(8*2)+(7*3)+(6*4)+(5*7)+(4*0)+(3*5)+(2*1)+(1*9)=131
131 % 10 = 1
So 1234705-19-1 is a valid CAS Registry Number.

1234705-19-1Downstream Products

1234705-19-1Relevant articles and documents

Retro-claisen condensation with FeIII as catalyst under solvent-free conditions

Rao, Chitturi Bhujanga,Rao, Dasireddi Chandra,Babu, Dokuburra Chanti,Venkateswarlu, Yenamandra

supporting information; experimental part, p. 2855 - 2859 (2010/08/05)

An iron(III) salt catalyzed retro-Claisen condensation between an alcohol and a 1,3-diketone was investigated. The mechanism involves the formation of a metal-induced sixmembered cyclic transition state and cleavage of the C sp2-Csp3 bond. Regioselective esterification and one-pot couversion of silyl ethers into esters with good yields was observed. Simple reaction conditions, high yields, and broad scope of the reaction illustrate the good synthetic utility of this method.

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